Researchers Identify MAL Blood Group, Resolving 50-Year AnWj Antigen Mystery

Researchers in the United Kingdom have identified the MAL blood group system, resolving a 50-year mystery surrounding the AnWj antigen first identified in 1972. This discovery elucidates the genetic basis for the absence of the AnWj antigen, enabling the development of genotyping tests.

The work involved NHS Blood and Transplant and the University of Bristol, with contributions from scientist Louise Tilley. This advancement improves understanding of blood group genetics and has potential implications for blood transfusion compatibility.